<template>
  <view class="box" v-if="cart.length !== 0">
    <!-- 收获地址组件区域-->
    <my-address></my-address>
    <!-- 购物车标题-->
    <view class="cart-title">
      <view class="title">
        <uni-icons type="shop" size="18"></uni-icons>
      </view>
      <view class="content">
        购物车
      </view>
    </view>
    <!-- 购物车商品列表-->
    <uni-swipe-action>
      <block v-for="(item,i) in cart" :key="i">
        <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(item)">
          <!-- 使用my-goods组件渲染，同时传入showRadio,showNum显示选中按钮和数量选择器-->
          <my-goods :goods="item" :showRadio="true" :showNum="true" @radioChange='radioHandler' @numChange="numHandler">
          </my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 结算区域组件-->
    <my-settle></my-settle>
  </view>
  
  <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
  //  @表示根目录
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {
    mapState,
    mapMutations
  } from "vuex"

  export default {
    mixins: [badgeMix],
    data() {
      return {
        options: [{
          text: '删除', // 显示的文本内容
          style: {
            backgroundColor: '#C00000' // 按钮的背景颜色
          }
        }]
      }
    },
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    methods: {
      ...mapMutations('m_cart', ['updateCartRadio', 'updateCartCount', 'deleteCartShop']),
      //选中状态的处理函数
      radioHandler(e) {
        this.updateCartRadio(e)
      },
      //数量的处理函数
      numHandler(e) {
        this.updateCartCount(e)
      },
      //删除处理
      swipeActionClickHandler(item) {
        this.deleteCartShop(item)
      }
    }
  }
</script>

<style lang="scss">
  .box {
    padding-bottom: 50px;
  }

  .cart-title {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;

    .content {
      margin-left: 10px;
      font-size: 14px;
    }
  }
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  
    .empty-img {
      width: 90px;
      height: 90px;
    }
  
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }
</style>
